Passero
Passero is a Squarespace theme by Squarespace (Free). Tested on 2026-10-28 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 63 for mobile speed and 78 for desktop speed, 85/85 for SEO and 91/91 for accessibility (mobile/desktop, 0–100).
Mobile63
Desktop78
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 63 | 78 |
| SEO | 85 | 85 |
| Accessibility | 91 | 91 |
| Best practices | 100 | 100 |
Single preset · measured 14 times since 2026-10-07 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Passero home page
Mobile
Speed 63 · 37 points to gain
- −24.8 Largest Contentful Paint medium effort
- −7.2 First Contentful Paint medium effort
- −4.8 Speed Index medium effort
- 1.7 s Reduce unused JavaScript high effort
- 600 ms Reduce unused CSS high effort
SEO 85 · 15 points to gain
- −7.7 Document does not have a meta description low effort
- −7.7 Links do not have descriptive text low effort
Accessibility 91 · 9 points to gain
- −6 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −2.6 Heading elements are not in a sequentially-descending order medium effort
Desktop
Speed 78 · 22 points to gain
- −17.4 Total Blocking Time medium effort
- −3.5 Largest Contentful Paint medium effort
- −0.8 Speed Index medium effort
SEO 85 · 15 points to gain
- −7.7 Document does not have a meta description low effort
- −7.7 Links do not have descriptive text low effort
Accessibility 91 · 9 points to gain
- −6.5 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −2.8 Heading elements are not in a sequentially-descending order medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Passero default demo ↗ | 63 | 85 | 91 | 78 | 85 | 91 | 2026-10-21 |
| home ↗ | 63 | 85 | 91 | 78 | 85 | 91 | 2026-10-21 |
Show this score on your site
A live badge: it always shows Passero's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/squarespace/passero-fluid-demo"><img src="https://themestested.com/badge/squarespace/passero-fluid-demo.svg" alt="Passero speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.